Nov 18 (Reuters) - Perpetua Resources Corp :
* PERPETUA RESOURCES ANNOUNCES OFFERING OF COMMON SHARES
* PERPETUA RESOURCES - LAUNCH OF PUBLIC OFFERING OF 3.4 MILLION SHARES OF ITS COMMON STOCK IN UNITED STATES
* PERPETUA RESOURCES - TO USE PROCEEDS OF OFFERING FOR DOWN PAYMENTS ON LONG LEAD TIME MATERIALS, DETAILED ENGINEERING FOR STIBNITE GOLD PROJECT
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